Mexican authorities said Thursday they have found a mass grave east of Mexico City and are testing to determine if it holds some of the 12 people who vanished from a bar in an upscale area of the capital nearly three months ago.

Outgoing FBI Director Robert Mueller told Fox News Thursday that Al Qaeda “may well have postponed” its plan to attack U.S. diplomatic sites in the Middle East and Africa after Washington scrambled to close them before any terror assault could be staged.